CN105308881B

CN105308881B - Efficient wave beam training method and related communication device and network control unit

Info

Publication number: CN105308881B
Application number: CN201580000981.2A
Authority: CN
Inventors: 游家豪; 张铭博; 桂建卿
Original assignee: MediaTek Inc
Current assignee: MediaTek Inc
Priority date: 2014-05-23
Filing date: 2015-05-22
Publication date: 2019-04-23
Anticipated expiration: 2035-05-22
Also published as: EP3008831A1; CN105308881A; EP3008831A4; US9876549B2; US20150341095A1; WO2015176684A1

Abstract

The present invention proposes a kind of communication device, including controller and wireless communication module.Wireless communication module is communicated using the preferred reception wave beam determined in wave beam training process with network control unit, and the signal of the network control unit is received by using one or more candidate reception wave beams, further monitor the candidate reception wave beam of the one or more.Signal is sent by the network control unit using preferred control wave beam.Controller calculates the preferred detection index for receiving wave beam and the preferred control wave beam, and the candidate each combined detection index for receiving wave beam and the preferred control wave beam of the one or more, and according to the candidate each combined detection index for receiving wave beam and the preferred control wave beam of the preferred detection index for receiving wave beam and the preferred control wave beam and the one or more, it is determined whether change the preferred reception wave beam.By the way that efficient wave beam training can be carried out using the present invention.

Description

Efficient wave beam training method and related communication device and network control unit

Cross reference

This application claims the United States provisional applications 62/002,217 that on May 23rd, 2014 submits, entitled The priority of " ADAPTIVE BEAM TRAINING METHOD FOR WIRELESS SYSTEMS ", and this is applied for joining It examines.

Technical field

The present invention trains (beam training) about efficient wave beam, and more particularly in layering (hierarch Ical) wave beam training.

Background technique

Term " wireless " refers generally to be not required to can be completed electrically or electronically using " hardwired (hard wired) " connection Operation." wireless communication " is that information is transmitted certain distance in the case where not needing using electric conductor or electric wire.Above-mentioned distance Can be short (such as remote for several meters of TV remote), it can also be very long by (thousands of or even millions of thousand as being used for radio communication Rice).Wirelessly communicating foremost example is mobile phone.Nothing can be used by mobile phone in the user in many places in the whole world Line electric wave is conversed with another party.Simply by the presence of the mobile phone website of the transmittable equipment for receiving signal of covering, mobile electricity Words can be used for Anywhere, and wherein signal is by processing to send and receive voice and data for mobile phone.

There are many develop good, well-defined mobile communication wireless to be electrically accessed technology (Radio Access at present Technology,RAT).For example, global system for mobile communications (Global System for Mobile Communications, GSM) it is the communication system that a kind of definition is clear and is generally adopted, use time division multiple acess (Time Division Multiple Access, TDMA) technology, this technology is for the transmission sound between mobile phone and cell site The digital radio Multiple Access scheme of sound, data and signaling data (such as telephone number of dial-out).CDMA2000 is a kind of mixed Close mobile communication 2.5G/3G technical standard, use CDMA (Code Division Multiple Access, CDMA) technology.Universal Mobile Communication System (Universal Mobile Telecommunications System, UMTS) is A kind of 3G mobile communication system provides larger range of multimedia service than gsm system.Wireless Fidelity (Wireless Fidelity, Wi-Fi) be a kind of technology defined by 802.11 engineering standards, can be used for home network, mobile phone and Video-game, to provide high-frequency wireless local area.Long term evolution (Long Term Evolution, LTE) and by LTE evolution Advanced LTE (LTE-Advanced) be 4G mobile communication system, it is possible to provide more than the high-speed data transfer of 2G and 3G system.

Millimeter wave (millimeter-wave) band has usable spectrum, provides obviously high level gulp down than microwave band The amount of spitting.Since considerably higher decaying (attenuation) is horizontal and the directional nature of millimeter-wave signal, millimeter wave apparatus is (i.e. Website) high orientation antenna and beam forming (beamforming) technology are generallyd use for communicating.

Beam forming is a kind of signal processing technology, and permission is combined from mutiple antennas branch received signal, with For special purposes, as Signal Interference and Noise Ratio (Signal to Interference and Noise Ratio, SINR) maximization or AF panel.

It is shaped by analog beam, signal combination carries out (in front of the adc) in analog domain, and does not have flexibility usually. Signal is by ADC after combination, in numeric field, only a branch of signal.

For digital beam-forming, signal combination is carried out in numeric field.To realize this target, from different antennae point Branch received signal is each by ADC.By this method, since there are numeric field multiple signals can be used for handling, more Flexibly.However, to achieve the goals above, needing multiple process chains, analog signal being transformed into numeric field.For example, Need multiple ADC.

Summary of the invention

In view of this, the present invention proposes a kind of communication device, network control unit and efficient wave beam training method.Communication dress The exemplary embodiment set includes controller and wireless communication module.Wireless communication module is determined using in wave beam training process Preferred reception wave beam communicated with network control unit, and receive wave beams by using one or more candidate and receive the network The signal of control device further monitors the candidate reception wave beam of the one or more.Signal is by the network control unit using excellent Selected control wave beam is sent.Controller calculates the preferred detection index for receiving wave beam and the preferred control wave beam and this Or multiple candidate each combined detection indexs for receiving wave beams and the preferred control wave beam, and according to preferred the receptions wave beam and Candidate each group for receiving wave beam and the preferred control wave beam of the detection index and the one or more of the preferred control wave beam The detection index of conjunction, it is determined whether change the preferred reception wave beam.

One exemplary embodiment of efficient wave beam training method includes: by using one or more candidate reception wave beams The signal of network control unit is received, to monitor the candidate reception wave beam of the one or more, wherein the signal is by the network-control Device is sent using the preferred control wave beam that communication device determines, and the communication device is excellent using what is determined in wave beam training process Choosing receives wave beam and communicates with the network control unit；The preferred detection index for receiving wave beam and the preferred control wave beam is calculated, And the candidate each combined detection index for receiving wave beam and the preferred control wave beam of the one or more；And it is excellent according to this Choosing receives the detection index of wave beam and the preferred control wave beam and one or more candidate receives wave beam and the preferred control Each combined detection index of wave beam, it is determined whether change the preferred reception wave beam.

One demonstration example of network control unit includes controller and wireless communication module.Wireless communication module is using preferred hair Wave beam and communication are sent, and sends wave beam by using one or more and sends a signal to the communication device, Lai Xunlian One or more candidate transmission wave beams, and the first indication signal is received, wherein first indication signal includes the related communication The candidate that device calculates sends the information of one or more detection indexs of wave beam.Controller is according to from first indication signal The one or more of middle acquisition detects index, it is determined whether changes the preferred transmission wave beam.

One exemplary embodiment of efficient wave beam training method includes: to send wave beam and communication using preferred； Wave beam is sent by using one or more and sends a signal to the communication device, to train one or more candidate transmission wave beams； The first indication signal is received, wherein first indication signal includes the one of the candidate transmission wave beam that the related communication device calculates The information of a or multiple detection indexs；And index is detected according to the one or more obtained from first indication signal, Determine whether to change the preferred transmission wave beam.

By the way that efficient wave beam training can be carried out using the present invention.

Other embodiments and advantage as detailed below.This part content not limits invention, and the scope of the invention is by weighing Benefit requires to be limited.

Detailed description of the invention

By reading subsequent datail description and demonstration example, and attached drawing is referred to, the present invention can be understood completely.

Fig. 1 is the schematic diagram of wireless communication system according to an embodiment of the invention.

Fig. 2 shows the simplification block schematic diagram of network control unit in service network according to an embodiment of the invention.

Fig. 3 A is that according to an embodiment of the invention there is at least one network control unit to support analog array wave beam The schematic diagram of the example wireless communication system of forming.

Fig. 3 B is that network control unit and communication device according to another embodiment of the present invention support analog array wave beam The schematic diagram of another example wireless communication system of forming.

Fig. 4 shows the exemplary block schematic diagram of wireless communication module according to an embodiment of the invention.

Fig. 5 shows the multiple demonstrations according to an embodiment of the invention for being network controlled device or communication device and sending The schematic diagram of TX wave beam.

Fig. 6 is the schematic diagram of the tree architecture of multi-level wave beam according to an embodiment of the invention.

Fig. 7 is the schematic diagram that display system according to an embodiment of the invention assumes.

The schematic diagram of table at the time of Fig. 8 is network control unit according to an embodiment of the invention.

Fig. 9 is the flow chart of the efficient wave beam training method in terms of the first novelty according to the present invention.

Figure 10 is the exemplary flow chart of UE and BS operation according to a first embodiment of the present invention.BS can be continuously using control Wave beam sends signal.

Figure 11 is the exemplary flow chart of UE and BS operation according to a second embodiment of the present invention.BS can be connected using control Wave beam sends signal.

Figure 12 is the exemplary flow chart of the operation of UE and BS according to a third embodiment of the present invention.

Figure 13 is the exemplary flow chart of UE and BS operation according to a fourth embodiment of the present invention.

Figure 14 is the flow chart of the efficient wave beam training method in terms of the second novelty according to the present invention.

Figure 15 is the exemplary flow chart of UE and BS operation according to a fifth embodiment of the present invention.

Figure 16 is the exemplary flow chart of UE and BS operation according to a sixth embodiment of the present invention.

Figure 17 is the flow chart of the efficient wave beam training method in terms of third novelty according to the present invention.

Figure 18 A is the signal of the exemplary wave beam of network control unit and communication device according to an embodiment of the invention Figure.

Figure 18 B is the signal of the exemplary wave beam of network control unit and communication device according to another embodiment of the present invention Figure.

Figure 18 C is the signal of the exemplary wave beam of network control unit and communication device according to another embodiment of the present invention Figure.

Figure 19 is the flow chart of the efficient wave beam training method in terms of the 4th novelty according to the present invention.

Figure 20 A is the signal of the exemplary wave beam of network control unit and communication device according to an embodiment of the invention Figure.

Figure 20 B is the signal of the exemplary wave beam of network control unit and communication device according to another embodiment of the present invention Figure.

Figure 20 C is the signal of the exemplary wave beam of network control unit and communication device according to another embodiment of the present invention Figure.

Figure 21 is the exemplary flow chart of UE and BS operation according to a eighth embodiment of the present invention.

Specific embodiment

Be described below is that the preferred embodiment that the present invention is implemented is not intended as to describe basic principle of the invention Limitation of the present invention.Protection scope of the present invention is made by claims and being defined.

Fig. 1 is the schematic diagram of wireless communication system according to an embodiment of the invention.In wireless communication system 100, lead to T unit 110 is wirelessly connected to service network, service network 120 as shown in Figure 1, to obtain radio communication service.Wirelessly The operation of network 120 meets predefined communication protocol.Service network 120 may include one or more network control units, such as net Network control device 130.Network control unit 130 provides the connection of the interface between one or more communication devices and core net, from And radio communication service is supplied to communication device 100.Service network 120 may also comprise one or more intermediaries (intermediate) control node, network controlling entity 150 as shown in Figure 1, to control one or more network-controls The operation of device.In an embodiment of the present invention, network controlling entity can be base station controller (Base Station Controller, BSC), or can be in the case where being not required to central controller in a distributed way (distributed manner) It realizes, or can be a part etc. of base station functions, and can be responsible for activating (activating)/deactivation (deactivating), match Set the signaling entity under its control (subsequent paragraph will be further discussed).

In addition, an embodiment according to the present invention, network control unit can for evolution node B (evolved Node B, ENB), base station (Base Station, BS), BSC, radio network controller (Radio Network Controller, RNC) Deng.It may be noted that in some embodiments of the invention, the network control when network control unit is eNB or BS, in service network Entity processed can be BSC, can configure network control unit.

An embodiment according to the present invention, communication device 110 can be the terminal node for being wirelessly connected to service network, such as use Family equipment (User Equipment, UE).Communication device 110 may include at least one wireless communication module 111, for realize with Wireless transceiver and receive capabilities between service network 120.For further clarifying, wireless communication module 111 may include at least One band signal processor (not showing in Fig. 1) and front end signal processing unit (not showing in Fig. 1).Base band signal process dress Setting may include multiple hardware devices, Lai Jinhang base band signal process, including analog-to-digital conversion (Analog-to-Digital Conversion, ADC)/digital-to-analogue conversion (Digital-to-Analog Conversion, DAC), gain adjustment, modulation/solution Tune, coding/decoding etc..Front end signal processing unit can receive RF signal, handle RF signal, and RF signal is converted to base band Signal to be handled by band signal processor, or from band signal processor receives baseband signal, and will receive Baseband signal is converted to RF signal, and is handled it to be transmitted.Front end signal processing unit may also comprise multiple hard Part device is converted and RF signal processing to carry out radio frequency.For example, front end signal processing unit may include frequency mixer, and being used to will Baseband signal is multiplied by the carrier wave vibrated on wireless communication system radio frequency, and wherein radio frequency depends on the RAT used.In addition, communication Device 110 may include controller 112, to control the operation of wireless communication module 111 and functional unit (not shown), wherein function Component such as display unit and/or keyboard service (such as man-machine interface (man-machine interface, MMI)), storage are answered With or communication protocol data and the storage unit of program code etc..

It may be noted that for theory clearly of the invention, Fig. 1 shows simplified block diagram, wherein illustrating only and this hair Bright relevant element.Therefore, the present invention is not limited to the contents that Fig. 1 is shown.

Fig. 2 shows the simplification block schematic diagram of network control unit in service network according to an embodiment of the invention. An embodiment according to the present invention, network control unit can be eNB, BS, BSC, RNC etc., and can be considered as in the service network The communication device of radio communication service is provided.Network control unit 230 may also comprise at least one wireless communication module 231, use Between progress and core network and one or more (peer) devices (communication device 110 as shown in Figure 1) at the same level Wireless transceiver and reception.For further clarifying, wireless communication module 231 may include band signal processor (in Fig. 2 not Show) and front end signal processing unit (not showing in Fig. 2).Band signal processor may include multiple hardware devices, Lai Jinhang base Band signal processing, including ADC/DAC, gain adjustment, modulating/demodulating, coding/decoding etc..Front end signal processing unit can receive RF signal handles RF signal, and RF signal is converted to baseband signal, to be handled by band signal processor, Huo Zheqian End signal processing unit can receive baseband signal from band signal processor, and the baseband signal received is converted to RF letter Number, and it is handled to be transmitted.Front end signal processing unit may also comprise multiple hardware devices to carry out radio frequency and turn It changes.For example, front end signal processing unit may include frequency mixer, be used to baseband signal multiplied by wireless communication system radio frequency The carrier wave of upper oscillation, wherein radio frequency depends on the RAT used.In addition, network control unit 230 may include controller 232, with control The operation of wireless communication module 231 processed and other function component (not shown), wherein functional unit is as stored application or communication protocols Data and the storage unit of program code of view etc..

It may be noted that Fig. 2 shows the block diagrams simplified, wherein illustrating only and this hair for theory clearly of the invention Bright relevant element.Therefore, the present invention is not limited to the contents that Fig. 2 is shown.

An embodiment according to the present invention, at least one network control unit (such as network control unit 130 or 230) and logical T unit (such as communication device 110) may include an aerial array, and wherein aerial array includes mutiple antennas unit, to support to simulate Array beams shape (analog-array beamforming).Analog array beam forming is beneficial in wireless communication system Signal transmission and/or reception.More particularly, analog array beam forming can provide array gain, severe for compensating Serious path loss caused by wireless propagation environment, and can save in transmitter (TX)/receiver (RX) end mutiple antennas Necessity of training channel response matrix between unit.

Fig. 3 A is that according to an embodiment of the invention there is at least one network control unit to support analog array wave beam The schematic diagram of the example wireless communication system of forming.According to Fig. 3 A, network control unit 330A can be eNB or BS, and can produce Raw multiple TX wave beams that there is different direction and/or be pointed in different directions (angle).Communication device 310A and 320 can be UE, and identical or different TX wave beam can be received respectively, to obtain the better array gain for being used for data transmission.

Fig. 3 B is that network control unit and communication device according to another embodiment of the present invention support analog array wave beam The schematic diagram of another example wireless communication system of forming.As shown in Figure 3B, network control unit 330B can be eNB or BS, And it can produce multiple TX wave beams that there is different direction and/or be pointed in different directions (angle).Communication device 310B can be UE, and also can produce multiple TX wave beams that there is different direction and/or be pointed in different directions (angle).

In general, when only network control unit supports analog array beam forming, then network control unit is needed TX wave beam training.In addition, needing network control when network control unit and communication device support analog array beam forming The respective TX wave beam of device and communication device processed is trained and RX wave beam is trained.However, being selected suitably from larger candidate combinations Resource can be consumed by sending wave beam, when in particular by exhaustive search (exhaustive search).When TX wave beam is trained and RX wave When Shu Xunlian is required, complexity can be further increased.Therefore, following paragraphs will propose efficient wave beam training method.

Fig. 4 shows the exemplary block schematic diagram of wireless communication module according to an embodiment of the invention.Wireless communication Module 400 can for included in communication device and/or network control unit (it may be noted that in an embodiment of the present invention, network Control device also can be considered provide service network in radio communication service communication device) wireless communication module.Wireless communication Module 400 may include band signal processor 401 and front end signal processing unit 402.As described above, base band signal process fills Setting 401 may include multiple hardware devices, Lai Jinhang base band signal process, including ADC/DAC, gain adjustment, modulating/demodulating, volume Code/decoding etc..An embodiment according to the present invention, band signal processor 401 may also comprise processor (not showing in Fig. 4), To control the operation of hardware device.It may be noted that in some embodiments of the invention, the device for carrying out ADC and DAC can also be put into Except band signal processor 401, and it is placed between band signal processor 401 and front end signal processing unit 402, Or it can also be placed into the inside of front end signal processing unit 402, the present invention is not limited to any specific implementations.

Front end signal processing unit 402 may include radio frequency (Radio Frequency, RF) signal processing module 421 and phase Level controller (phase controller) 422.RF signal processing module 421 may also comprise multiple hardware devices to carry out radio frequency Conversion and RF signal processing.For example, as shown in figure 4, RF signal processing module 421 may include at least one frequency mixer and one A oscillator, the conversion of Lai Jinhang radio frequency.Phase controller 422 may include mulitpath, and each path is couple to corresponding antenna Unit, and including at least one phase regulator, to adjust the phase and/or adjustment phase of the corresponding RF signal that will be sent Answer the phase (or angle) of antenna element.An embodiment according to the present invention, phase regulator can be by band signal processors 401 (processors for including in such as band signal processor 401) control.It should be noted in some embodiments of the invention, RF Signal processing module 421 is also designed to include multiple signal processing links, and each signal processing link corresponds to a receipts Chain road is sent out, and carries out radio frequency conversion and RF signal processing as shown in Figure 4 including multiple hardware devices.The present invention is simultaneously unlimited Due to any specific implementation.

In addition, in some embodiments of the invention, the processor for including in band signal processor also can control whole The operation of a wireless communication module, or in some embodiments of the invention, controller 112/232 and control baseband signal The processor of the hardware device operation of processing unit can integrate, as a controller or processor.There may be more The different design of kind, the present invention is not limited to any specific implementations.

In addition, for theory clearly of the invention, Fig. 4 shows simplified block diagram, wherein illustrating only and the present invention Relevant element.Therefore, the present invention is not limited to the contents that Fig. 4 is shown.

Fig. 5 shows the multiple demonstrations according to an embodiment of the invention for being network controlled device or communication device and sending The schematic diagram of TX wave beam.An embodiment according to the present invention, support analog array beam forming network control unit and/or Person's communication device can produce multi-level (multi-level) wave beam.As shown in figure 5, wave beam 501-1~501-3 can belong to first Wave beam rank rank 1, wave beam 502-1~502-9 can belong to the second wave beam rank rank 2.It may be noted that in an implementation of the invention In example, for sending or receiving, if only one RF receiver, a wave beam once can be only formed.

The wave beam of an embodiment according to the present invention, different beams rank can have different spatial resolutions, also by Referred to as wave beam resolution.In addition, the wave beam of different beams rank can also have different beam angles.Each wave beam rank can have There is corresponding wave beam resolution.Wave beam resolution can be based on home beam rank, ascending or descending order distribution.In addition, having more The wave beam of good wave beam resolution can array gain with higher, having can have lower array to increase compared with the wave beam of low-res Benefit.For example, since the beam angle ratio for belonging to wave beam 501-1~501-3 of the first wave beam rank rank 1 belongs to the second wave The beam angle of wave beam 502-1~502-9 of beam rank rank 2 is wide, and the wave beam resolution of wave beam 501-1~501-3 compares wave beam The wave beam resolution of 502-1~502-9 is low, and the array gain of wave beam 502-1~502-9 is than wave beam 501-1~501-3 battle array Column high gain.

In addition, an embodiment according to the present invention, wave beam rank can be layering wave beam rank.Fig. 6 is according to the present invention one The schematic diagram of the tree architecture of the multi-level wave beam of embodiment.In Fig. 6, each circle represents a wave beam.Three are shown in Fig. 6 A wave beam rank, including rank 1, rank 2 and rank 3.Wave beam rank rank 1, rank 2 and rank 3 are layering wave beam rank, point The wave beam resolution of wave beam and array gain can be from the first wave beam rank ranks 1 to third wave beam rank rank in layer wave beam rank 3 are distributed with ascending order.That is, the wave beam resolution of wave beam is higher than the wave beam resolution of wave beam in rank 1, rank 3 in rank 2 The wave beam resolution of middle wave beam is higher than the wave beam resolution of wave beam in rank 2.In addition, the array gain of wave beam is higher than in rank 2 The array gain of wave beam in rank 1, the array gain of wave beam is higher than the array gain of wave beam in rank 2 in rank 3.

Several wave beams in wave beam and next rank in addition, an embodiment according to the present invention, in particular beam rank It is related.Herein, term " in relation to " indicates the main beam pattern (i.e. the main lobe of wave beam) between two wave beams with overlapping.Citing For, as shown in figure 5, the wave beam 502-1 in wave beam 501-1 and the second wave beam rank rank 2 in the first wave beam rank rank 1 ~502-3 is related.The angular coverage of wave beam 501-1 substantially covers the angular coverage of wave beam 502-1~502-3, and wave The main beam pattern of beam 501-1 and the main beam pattern of wave beam 502-1~502-3 are Chong Die.In addition, the first wave beam rank rank 1 In wave beam 501-2 it is related with wave beam 502-4~502-6 in the second wave beam rank rank 2.The angle of wave beam 501-2 covers model Enclose the angular coverage for substantially covering wave beam 502-4~502-6, and the main beam pattern of wave beam 501-2 and wave beam 502-4~ The main beam pattern of 502-6 is overlapped.In addition, wave beam 501-3 and the second wave beam rank rank 2 in the first wave beam rank rank 1 In wave beam 502-7~502-9 it is related.The angular coverage of wave beam 501-3 substantially covers the angle of wave beam 502-7~502-9 Coverage area, and the main beam pattern of wave beam 501-3 is Chong Die with the main beam pattern of wave beam 502-7~502-9.In addition, at this Invention an embodiment in, in the second wave beam rank rank 2 summation of the angular coverage of wave beam preferably with the first wave beam rank The summation of the angular coverage of wave beam is identical in rank 1.Fig. 6 also shows wave beam correlation properties.

Fig. 7 is the schematic diagram that display system according to an embodiment of the invention assumes.In an embodiment of the present invention, it is assumed that Network control unit (such as eNB, BS) 730 is not aware that the day of communication device (using the UE of its service under such as its coverage area) Linear array ability.Network control unit 730 may include three sectors (sector) 70-1,70-2 and 70-3.At least one sector, Such as sector 70-1, serviced by the control wave beam (control wave beam 1~control wave beam 4 as shown in Figure 7) in controlled range.Network Control wave beam can be used to send control signal, training sequence and/or reference signal in control device 730.Therefore, wave is controlled Beam can be used to the control channel of service network control device 730.Control signal may include the essential information of initial system access.It lifts For example, control signal may include that communication device is used to synchronous with network control unit 730 and communication information.Training sequence can For carrying out wave beam training (subsequent paragraph will be described in more detail).

An embodiment according to the present invention, control wave beam can be network controlled device 730 and use in a time division manner.Fig. 8 is The schematic diagram of table at the time of network control unit according to an embodiment of the invention.As shown in figure 8, the period 801 is used for downlink chain Road transmission, period 803 are used for extended receiver.In addition, the period 802 and 804 transmits for exclusive data.In 801 phase of period Between downlink opportunity (downlink opportunity) of control wave beam 1 is represented with the square of digital " 1 " mark, in the period The downlink opportunity of control wave beam 2 is represented during 801 with the square of digital " 2 " mark, and so on.Similarly, in the period The uplink opportunity (uplink opportunity) for representing control wave beam 1 during 803 with the square of digital " 1 " mark, The uplink opportunity of control wave beam 2 is represented during period 803 with the square of digital " 2 " mark, and so on.

It may be noted that in an embodiment of the present invention, applying array reciprocity (array reciprocity).That is, The TX wave beam of network control unit and the RX wave beam of network control unit are identical.Similarly, the TX wave beam of communication device with communicate The RX wave beam of device is identical.Therefore, under the wave beam (the control wave beam including network control unit) of network control unit can be used for Line link transmission and extended receiver, the wave beam of communication device can be used for downlink reception and uplink transmission.

In addition, in an embodiment of the present invention, continuous training sequence can be sent in transmission by transmission mode. In addition, in an embodiment of the present invention, it can be achieved that the training of one-to-many (1-to-many) wave beam, enables network control unit The multiple communication devices of training in a wave beam training process.

In addition, in an embodiment of the present invention, it is assumed that the control wave beam of network control unit is propped up by network control unit With the wave beam of worst wave beam resolution and most wide beamwidth in all wave beams held.Therefore, control wave beam is in network-control There is most wide angular coverage in all wave beams that device is supported.

In next paragraph, the method that several efficient wave beams are trained will be illustrated.In an embodiment of the present invention, it proposes Layering wave beam training method, wherein the wave beam with minimum wave beam resolution is trained first.Next, having compared with Gao Bo The wave beam of beam resolution is based on previous training result and selects, and is trained.Training result can detect index by calculating (detection metric) is obtained.For example, trained to store candidate training sequences set in advance.Each candidate training Sequence can correspond to the specific TX wave beam of training side.It is trained after the training sequence that training side receives that specific TX wave beam carries Being associated between the training sequence and candidate training sequences each in candidate training sequences received can be calculated, to generate detection Index.Trained can further determine from detection index has highest (and sufficiently high) related to the training sequence received The best candidate training sequence of degree, and find out the TX wave beam corresponding to the training side of best candidate training sequence.It can get as a result, Training result.Wave beam training process can be carried out continuously by rank, until obtaining satisfied array gain.

An embodiment according to the present invention needs rope if detection index sends (signal) to training side by signal It attracts and indicates which transmission wave beam is related with the detection index sent by signal.In general, have by signal transmission several Selection: 1) sends preferred TX wave beam by signal.It is trained simply to indicate index (therefore, wave beam is selected by trained side). 2) sends several strongest TX wave beams and their detection index by signal.Trained side, which needs to send by signal, to be detected The index of index and these wave beams.3) sends all detection indexs to training side by signal, and training side is based on feedback If (index is appropriately configured, and only detection index has feedback) selects one.

It may be noted that in an embodiment of the present invention, training side represents transmission training sequence or sends any training signal One side, trained side represent received training sequence or receive a side of any training signal.Therefore, based on different scenes, training It can be eNB/BS or UE, trained can be UE or eNB/BS.In addition, in some embodiments, trained side can also refer to detection Mark is sent to training side.Training can determine optimal T X/RX wave beam according to the detection index received.

In terms of the first novelty of the invention, it is assumed that communication is not known in advance in network control unit (such as eNB, BS) The preferred control wave beam of device (UE under such as its coverage area), therefore propose control beam selection and UE reception wave beam instruction Experienced joint operation.

Fig. 9 is the flow chart of the efficient wave beam training method in terms of the first novelty according to the present invention.Communication device can be first First selection receives the first subset of wave beam (step S902) from multiple reception wave beams that it is supported.An embodiment according to the present invention In, widest beam angle in multiple reception wave beams that the reception wave beam for including in the first subset can have it to support.It may be noted that The reception wave beam for including in first subset can also have the beam angle narrower than most wide beamwidth, and the present invention is not limited thereto.

Next, communication device can receive the letter that network control unit is sent using the wave beam that receives in the first subset in turn Number (step S904).Next, communication device can calculate each combination for receiving wave beam and controlling wave beam in the first subset It detects index (step S906).Finally, communication device can determine that preferred control wave beam receives wave beam with preferred according to detection index (step S908).

The controller (such as controller 112) of first embodiment according to the present invention, communication device can be from the nothing of communication device Selection receives the first subset of wave beam in multiple reception wave beams that line communication module (such as wireless communication module 111) is supported.Wirelessly Communication module can in turn using the reception wave beam in the first subset, come receive network control unit transmission for the first stage The signal of wave beam training.As described above, network control unit can send signal using multiple control wave beams in turn.Wireless communication Module can receive net on the downlink opportunity for corresponding to each control wave beam using the reception wave beam in the first subset in turn The signal that network control device is sent.

After receiving signal, controller can further calculate each combination for receiving wave beam and controlling wave beam in the first subset Detection index, and according to detection index determine preferred control wave beam and it is preferred receive wave beam, the wave beam for the first stage is instructed Practice.After determining preferred control wave beam, wireless communication module can further on uplink opportunity corresponding with preferred control wave beam, Indication signal is sent to network control unit, wherein indication signal includes the information in relation to preferred control wave beam.It may be noted that at this In the embodiment of invention, network control unit does not need to know the preferred reception wave beam of communication device.Therefore, communication device is not It needs information related with the preferred reception wave beam determined in wave beam training process to be sent to network control unit.

Figure 10 is the exemplary flow chart of UE and BS operation according to a first embodiment of the present invention.BS can be continuously using control Wave beam sends signal.RX beam subset can be used to receive the signal that each control wave beam is sent, to carry out RX wave beam instruction in UE Practice.If the training of all RX wave beams can not be completed during a wheel control wave beam transmission in subset, UE needs to wait next round Control wave beam transmission, the training of Lai Jixu RX wave beam.After the completion of the training of RX wave beam, UE can be determined by subset preferably controls wave beam and excellent RX wave beam is selected, and as described above, preferred control wave beam is fed back into BS.

Second embodiment according to the present invention, if first stage wave beam failure to train as described above, the control of communication device Device processed can further selection second receives wave beam from multiple reception wave beams that the wireless communication module of communication device is supported Collection.Wireless communication module can pass through control wave beam in turn using the reception wave beam in second subset to receive network control unit The signal for the training of second stage wave beam sent.An embodiment according to the present invention, obtains caused by high path loss Detection index in all degrees of correlation it is all not high enough when, wave beam training may will fail.In this way, which controller can determine open The training of beginning second stage wave beam receives beam subset with training second.

Preferred embodiment in accordance with the present invention overcomes the problems, such as high path loss to obtain higher array gain, At least one for including in two subsets, which receives wave beam, can have the wave beam narrower than at least one of first subset reception wave beam wide Degree.Therefore, when the reception wave beam for including in the first subset has widest wave in the supported multiple reception wave beams of communication device When beam width, at least one for including in second subset, which receives wave beam, can have the beam angle narrower than most wide beamwidth.

After network control unit reception signal, controller can further calculate reception wave beam and control in second subset Each combined detection index of wave beam, and determine according to detection index the preferred control wave beam and excellent of second stage wave beam training Choosing receives wave beam.

Figure 11 is the exemplary flow chart of UE and BS operation according to a second embodiment of the present invention.BS can be connected using control Wave beam sends signal.The first subset of RX wave beam can be used to receive the signal of each control wave beam transmission, to carry out RX wave in UE Shu Xunlian.If the training of all RX wave beams can not be completed during a wheel control wave beam transmission in the first subset, UE needs to wait Next round controls wave beam transmission, the training of Lai Jixu RX wave beam.As described above, the RX wave beam in the first subset can have lower wave Beam resolution.If UE can not be determined preferred control wave beam and preferred RX wave beam, first stage wave beam failure to train by the first subset.

Next, the 2nd RX beam subset with higher wave beam resolution can be used in UE carries out the training of RX wave beam again, To receive the signal that each control wave beam is sent.After the completion of the training of RX wave beam, it is excellent that UE can be determined that preferred control wave beam is closed by subset RX wave beam is selected, and preferred control wave beam is fed back into BS as described above.

It may be noted that the training of layering wave beam is realized at the end UE in the second embodiment of the present invention.UE can be first from most The RX wave beam of low or lower wave beam resolution starts to train, to reduce training delay (latency).If having minimum or lower wave The failure to train of the RX wave beam of beam resolution, UE may be selected that there is the RX wave beam of higher wave beam resolution to increase array gain, To compensate path loss.Wave beam training process may be repeated several wheels, until obtaining satisfied array gain and/or satisfaction Correlation.

Third embodiment according to the present invention, after the completion of the wave beam training of first stage as described above, communication device Controller further can select the second received wave from multiple reception wave beams that the wireless communication module of communication device is supported Beam subset.Wireless communication module can receive network control unit by preferably controlling in turn using the reception wave beam in second subset The signal for the training of second stage wave beam that wave beam processed is sent.The received wave in second subset can be used in wireless communication module Beam receives the signal that network control unit is sent on the downlink opportunity for corresponding to preferred control wave beam.

In the third embodiment of the present invention, at least one for including in second subset receives wave beam and first stage wave beam The preferred reception wave beam determined in training is related.As described above, " in relation to " indicates main beam pattern (the i.e. wave between two wave beams The main lobe of beam) overlapping.Therefore, in the third embodiment of the present invention, the main beam figure for the reception wave beam for including in second subset Sample preferably receives that the main beam pattern of wave beam is Chong Die with preferred, and the angular coverage of preferably reception wave beam particularly up to covers the The sum of the angular coverage for the reception wave beam for including in two subsets.

After signal is received from network control unit, controller can further calculate reception wave beam in second subset and preferably Each combined detection index of wave beam is controlled, and second stage is determined from the reception wave beam of second subset according to detection index The preferred reception wave beam of wave beam training.

Figure 12 is the exemplary flow chart of the operation of UE and BS according to a third embodiment of the present invention.BS can be connected using control Wave beam processed sends signal.UE can be used one or more RX wave beams in the first RX wave beam rank and receive each control wave beam hair The signal sent, to carry out the training of RX wave beam.When the training of the RX wave beam of the first wave beam rank is completed, UE can determine preferred control wave The preferred RX wave beam of beam and the first wave beam rank.

An embodiment according to the present invention, after the preferred RX wave beam of the first wave beam rank determines, UE can be by using excellent RX wave beam is selected, starts to carry out data transmission with network control unit.It may be noted that since the present invention uses array reciprocity, preferably RX Wave beam can be used for downlink reception and uplink transmission.

In addition, UE can be further using one or more related with previously determined preferred RX wave beam in the second wave beam rank A RX wave beam receives network control unit by the signal of preferably control wave beam transmission, to carry out another RX wave beam training.When When the RX wave beam training of two wave beam ranks is completed, UE can determine the preferred RX wave beam of the second wave beam rank.In implementation of the invention In example, UE can further determine that the preferred RX wave beam of preferred RX wave beam or the second wave beam rank using the first wave beam rank (or two are all made of) carries out subsequent data receiver.It may be noted that wave beam training process can several wheels of further progress, be used for RX wave beam in wave beam rank with more high-res, the correlation until obtaining satisfied array gain and/or satisfaction.

It may be noted that in the third embodiment of the present invention, the layering wave beam training at the end UE is based on multi-level code book (codebook) it realizes.In an embodiment of the present invention, multi-level code book can record multiple setting the predefined of aerial array and set It is fixed, to generate multi-level beam patterns.Therefore, each setting in multi-level code book can correspond to a predetermined TX/RX wave beam.UE It can be as described above, the RX wave beam in different beams rank be trained according to wave beam resolution ascending order, until obtaining satisfied array The correlation of gain and/or satisfaction.

Fourth embodiment according to the present invention, after the completion of the wave beam training of first stage as described above, communication device Controller can further finely tune (fine-tune) first stage wave beam training in determine preferred reception wave beam direction, angle Degree and/or beam angle receive wave beam to generate after one or more adjustment (refined).Wireless communication module can take turns Stream using receiving wave beam after one or more adjustment, come receive network control unit by preferably control wave beam send for the The signal of two-stage wave beam training.

After signal is received from network control unit, controller can further calculate receive after one or more adjustment wave beams and It is preferred that each combined detection index of control wave beam, and according to detection index, it is true from reception wave beam after one or more adjustment Determine the preferred reception wave beam of second stage wave beam training.

In an embodiment of the present invention, controller can be based on multi-level code book or cross multi-level code book, finely tune the first rank Direction, angle and/or the beam angle of the preferred reception wave beam determined in section wave beam training.In other words, adjustment is followed by Receiving wave beam can be, and may not be predetermined RX wave beam defined in code book.

In addition, in some embodiments of the invention, communication device can start another wave beam training process, to retrieve second Angle of arrival (Angle of Arrival, AoA), wherein in preceding beams training process (such as it is completed as previously described the first stage When wave beam training, first stage wave beam as described above training) the preferred reception wave beam that determines is considered as the first AoA.It is more clear For, in some embodiments of the invention, after the completion of first stage wave beam as described above training, controller can be further Selection second receives beam subset from multiple reception wave beams that wireless communication module is supported.Wireless communication module can use in turn Reception wave beam in second subset is trained to receive network control unit by what control wave beam was sent for second stage wave beam Signal.

After network control unit reception signal, controller can further calculate reception wave beam and control in second subset Each combined detection index of wave beam, and another preferred control trained for second stage wave beam is determined according to detection index Wave beam and another preferred reception wave beam as the 2nd AoA.In an embodiment of the present invention, communication device can further be sent pair Should in the first and second AoA preferred control wave beam to network control unit, network control unit can determine using which (also It is all use) it is used to communicate.

Figure 13 is the exemplary flow chart of UE and BS operation according to a fourth embodiment of the present invention.The UE achievable first stage Wave beam training, determine the preferred control wave beam of first stage wave beam training and preferably receive wave beam, and will preferably control wave Beam feeds back to BS.Next, in the fourth embodiment of the present invention, there are three types of selections to carry out further progress second stage wave beam by UE Training.Selection 1 is that the wave for having in next wave beam rank of higher wave beam resolution defined in multi-level code book may be selected in UE Beam, the training of Lai Jinhang second stage wave beam.Selection 2 is that UE can surmount multi-level code book, is finely tuned in the training of first stage wave beam really The pointing direction of fixed preferred RX wave beam, and the training of second stage wave beam is carried out using wave beam after adjustment.Selection 3 is that UE can be carried out The training of second stage wave beam, searches for the 2nd AoA.

It may be noted that in the fourth embodiment of the present invention, layering wave beam training is based on or surmounts multi-level code book at the end UE It realizes.UE can be as described above, train the RX wave beam in different beams rank according to wave beam resolution ascending order, or training passes through RX wave beam after the adjustment that the pointing direction of preferred RX wave beam obtains, or another AoA of training are finely tuned, until obtaining satisfied array The correlation of gain and/or satisfaction.

In terms of the second novelty of the invention, network control unit (such as eNB, BS) can also receive communication device After the preferred control wave beam that (such as the UE under its coverage area) is fed back, multi-level TX/RX wave beam training is carried out.

Figure 14 is the flow chart of the efficient wave beam training method in terms of the second novelty according to the present invention.Network control unit The first indication signal can be received first, wherein the first indication signal includes the first stage wave beam training that related communication device determines Preferred control wave beam information (step S1402).Next, the preferred control that network control unit can be determined according to communication device Wave beam processed, selection sends the first subset of wave beam (step S1404) in multiple transmission wave beams that network control unit is supported.According to One embodiment of the invention, it is related with wave beam is preferably controlled that at least one for including in the first subset sends wave beam.

Next, network control unit can be in turn using the transmission wave beam in the first subset, by the training of second stage wave beam Signal be sent to communication device (step S1406).Next, network control unit can receive the second indication signal, wherein the Two indication signals include that related communication device is the information that one or more detection indexs that wave beam calculates are sent in the first subset (step S1408).Finally, network control unit can detect indexs according to the one or more obtained from the second indication signal, from The preferred transmission wave beam (step S1410) for sending selection second stage wave beam training in wave beam of first subset.

Fifth embodiment according to the present invention receives the first stage wave beam training determined including related communication device It is preferred that the controller of network control unit can control wave beam according to preferred after the first indication signal of the information of control wave beam, from In multiple transmission wave beams that the wireless communication module of network control unit is supported, selection sends the first subset of wave beam.

As described above, in a preferred embodiment of the invention, at least one for including in the first subset send wave beam with it is excellent Selected control wave beam is related.Transmission wave beam related with preferred control wave beam can have Chong Die with preferably control wave beam main beam pattern Main beam pattern.Beam angle of the beam angle for sending wave beam related with preferred control wave beam than preferred control wave beam It is narrow.It may be noted that in some embodiments of the invention, BS can also be by surmounting the multi-level preferred side for controlling wave beam of code book fine tuning To, angle and/or beam angle, to send wave beam as the send wave in the first subset after generating one or more adjustment Beam, to select the first subset of transmission wave beam.

Wireless communication module can be sent using the transmission wave beam in the first subset in turn for the training of second stage wave beam Signal to communication device.Wireless communication module can further receive the second indication signal, wherein the second indication signal includes Closing communication device is the information that wave beam one or more detection indexs calculated are sent in the first subset.Controller can according to from The one or more detection indexs obtained in second indication signal, select second stage wave beam from the transmission wave beam of the first subset Trained first is preferred to send wave beam.After determining the first preferred transmission wave beam, controller can pass through the first preferred wave beam that sends and send out Send data to communication device.

In addition, in some embodiments of the invention, network control unit can start another wave beam training process, with search Second leaves angle (Angle of Departure, AoD), the preferred transmission wave beam wherein determined in preceding beams training process It is considered as the first AoD.More particularly, in some embodiments of the invention, when the training of above-mentioned second stage wave beam is completed, Controller can further selection sends wave beam second subset from multiple transmission wave beams that wireless communication module is supported.Channel radio Believe that module can send signal for the training of phase III wave beam to communication device using the wave beam that sends in second subset in turn, And third indication signal is received, wherein third indication signal includes that related communication device calculates for the transmission wave beam in second subset One or more detection indexs information.

Controller can be further according to the one or more detection indexs obtained from third indication signal, from second subset Send selection phase III wave beam training in wave beam second it is preferred send wave beam, using as the 2nd AoD.In reality of the invention It applies in example, controller, which can be further determined that, sends wave beam (being still all made of) using the first preferred transmission wave beam or second are preferred It is sent for subsequent data.

Figure 15 is the exemplary flow chart of UE and BS operation according to a fifth embodiment of the present invention.The UE achievable first stage Wave beam training to determine the control wave beam and preferred reception wave beam of the training of first stage wave beam, and will preferably control wave beam feedback To BS.Next, BS can send the first son of wave beam according to preferred control wave beam, selection in the fifth embodiment of the present invention Collection, for the training of second stage wave beam, and BS can be used selected transmission wave beam and carry out signal transmission.In the embodiment of the present invention In, resource (for example, time and frequency) used by the selected transmission wave beam in the first subset can be sent out by signal in advance Give UE (as by preferably controlling wave beam).Therefore, UE is aware of when and how to receive the selected signal for sending wave beam and sending.

After receiving the selected signal for sending wave beam transmission, UE can be selected to send the detection index that wave beam calculates as wave beam It selects indicator and feeds back to BS.BS can then be based on beam selection indicator, select the preferred send wave of second stage wave beam training Beam.It is preferred that BS can send data to UE by preferably sending wave beam after training wave beam to determine.It may be noted that can further progress it is several Take turns wave beam training process, in wave beam rank with the TX wave beam of more high-res, until obtain satisfied array gain with And/or the correlation that person is satisfied.

In addition, in the fifth embodiment of the present invention, BS end group in or surmount multi-level code book and realize layering wave beam training. BS can be as described above, train the TX wave beam in different beams rank according to wave beam resolution ascending order, or training passes through fine tuning It is preferred that TX wave beam after the adjustment that TX wave beam obtains, the correlation until obtaining satisfied array gain and/or satisfaction.

Sixth embodiment according to the present invention, from received the first instruction for being used to indicate preferred control wave beam of communication device Signal is used to carry out arrival direction (Direction of Arrival, DoA) estimation by network control unit.As described above The selection that wave beam is sent in the first subset in five embodiments can be network controlled device and be based on DoA estimation decision.

More particularly, in the sixth embodiment of the present invention, controller can refer to according to from communication device received first Show that signal carries out DoA estimation, and determines that suitable wave beam resolution or suitable direction, angle adjust based on DoA resolution Unit (adjustment unit).Suitable wave beam resolution and suitable adjustment unit are for selecting/generating the above-mentioned 5th The transmission wave beam in the first subset mentioned in embodiment.In an embodiment of the present invention, DoA resolution depends on network-control The number for the transceiver link for including in the wireless communication module of device.As an example it is assumed that network control unit includes 10 Transceiver link covers 90 degree of angle, and DoA resolution can be confirmed as 9 degree, and suitable wave beam resolution or suitable Adjustment unit can be confirmed as not less than 9 degree.It is preferably based on the suitable wave beam resolution ratio control that DoA resolution determines The wave beam resolution of wave beam is high.

Next, controller can select one or more send waves according to suitable wave beam resolution from predefined code book Transmission wave beam in the first subset of Shu Zuowei, or the selected direction for sending wave beam, angle are finely tuned according to suitable adjustment unit, To send wave beam as the transmission wave beam in the first subset after generating one or more adjustment, and further instruct radio communication mold Block uses the transmission wave beam in the first subset to send a signal to communication device in turn, for mentioning in the 5th embodiment as described above The second stage wave beam training arrived.

Figure 16 is the exemplary flow chart of UE and BS operation according to a sixth embodiment of the present invention.The UE achievable first stage Wave beam training to determine the preferred control wave beam and preferred reception wave beam of the training of first stage wave beam, and will preferably control wave beam Feed back to BS.Next, BS can be based on carrying out DoA estimation, and base from the received feedback of UE in the sixth embodiment of the present invention In transmission wave beam first subset of the DoA resolution selection for the training of second stage wave beam.It may be noted that in the embodiment of the present invention In, selected transmission wave beam is preferably related with preferred control wave beam.

BS then can carry out signal transmission using selected transmission wave beam.In an embodiment of the present invention, institute in the first subset Publish send resource used in wave beam (such as time and frequency) can first pass through in advance signal be sent to UE (as by preferably control wave beam). Therefore, UE is aware of when and how to receive the selected signal for sending wave beam and sending.

After receiving the selected signal for sending wave beam transmission, UE can be using the detection index calculated for sending wave beam as wave beam Selection indicator feeds back to BS.BS can then be based on beam selection indicator, select the preferred transmission of second stage wave beam training Wave beam.After determining preferred transmission wave beam, BS can send data to UE by preferably sending wave beam.It may be noted that can further progress A few wheel wave beam training processes increase for the TX wave beam in the wave beam rank with more high-res until obtaining satisfied array Benefit and/or satisfied correlation.

In addition, layering wave beam training can be based on or surmount multi-level code book at the end BS in the sixth embodiment of the present invention It realizes.BS can carry out DoA assessment, and the TX wave beam being trained to based on the selection of DoA resolution as described above.BS can then train institute TX wave beam is selected, the correlation until obtaining satisfied array gain and/or satisfaction.

In terms of third novelty of the invention, after preferred control wave beam is determined with preferred reception wave beam, communication device (such as UE) can be by monitoring some other wave beams, and further progress wave beam safeguards (beam maintenance).If a wave Beam, which is detected, to be shown and preferably detects index than preferably controlling wave beam or the preferred wave beam that receives, then communication device, which can determine, changes Become preferred control wave beam or preferably receives wave beam.

Figure 17 is the flow chart of the efficient wave beam training method in terms of third novelty according to the present invention.Communication device can be first It first passes through using one or more candidate wave beams that receive from network control unit reception signal, is connect to monitor one or more candidates It receives wave beam (step S1702).In an embodiment of the present invention, signal is network controlled device using the preferred of communication device determination It controls wave beam to send, communication device is using the preferred reception wave beam determined in wave beam training process come logical with network control unit Letter.Next, communication device can calculate the detection index of preferred reception wave beam and preferred control wave beam, and one or more times Select each combined detection index (step S1704) of wave beam and preferred control wave beam.Next, communication device can be according to preferred Reception wave beam and the detection index for preferably controlling wave beam, and one or more candidates receive wave beam and preferably control each of wave beam A combined detection index, it is determined whether change is preferred to receive wave beam (step S1706).

More particularly, wave beam instruction can be used in seventh embodiment according to the present invention, the wireless communication module of communication device Practice the preferred reception wave beam determined in process to communicate with network control unit, and by using one or more candidate reception wave beams Signal is received from network control unit, further to monitor one or more candidate reception wave beams.Wireless communication module can be used Candidate receives wave beam to receive the signal that network control unit is sent using the preferred control wave beam determined in wave beam training process. The controller of communication device can calculate the preferred detection index for receiving wave beam and preferred control wave beam, and one or more candidate Each combined detection index of wave beam and preferably control wave beam is received, to receive wave beam and preferred control wave beam according to preferred Index is detected, and one or more candidate each combined detection indexs for receiving wave beam and preferred control wave beam, determination are No change is preferred to receive wave beam.

An embodiment according to the present invention, one or more candidate wave beams that receive can be the preferred adjacent reception for receiving wave beam Wave beam.In addition, in some embodiments of the invention, one or more candidate wave beams and the preferred wave beam that receives of receiving can belong to together One wave beam rank.In addition, one or more candidate reception wave beams receive wave beam with preferred in other embodiments of the invention It can wave beam resolution having the same.In addition, in other embodiments of the invention, it is one or more it is candidate receive wave beams and It can beam angle having the same it is preferred that receiving wave beam.

Figure 18 A is the signal of the exemplary wave beam of network control unit and communication device according to an embodiment of the invention Figure.As shown in Figure 18 A, network control unit 830 can be eNB or BS, and can produce with different direction and/or be directed toward not Multiple wave beams of equidirectional (angle).Communication device 810 can be UE, and can monitor the preferred adjacent beams for receiving wave beam 810-1.

According to another embodiment of the present invention, when communication device detects that current beam has the channel quality of decline (such as The SINR of decline) when, communication device can further determine that rollback (fall back), using the wave with lower wave beam resolution Beam.The current SINR1 obtained using current TX (network control unit end) and RX (communication device end) wave beam can be current with use The SINR2 that TX and rollback RX wave beam obtain is compared.Since rollback RX wave beam has lower resolution, lesser battle array is provided Column gain, then SINR1 > SINR2.If SINR1 and SINR2 is almost (merely comparable), can retract.

Figure 18 B is the signal of the exemplary wave beam of network control unit and communication device according to another embodiment of the present invention Figure.As shown in figure 18b, the preferred wave beam 810-1 that receives can be changed to the wave beam with lower wave beam resolution by communication device 810 810-2。

Therefore, in some embodiments of the invention, the one or more of communication device monitors it is candidate receive wave beams and The preferred reception wave beam of communication device can belong to different wave beam ranks.In addition, in some embodiments of the invention, one or Multiple candidate wave beam resolutions for receiving wave beam are low than the preferred wave beam resolution for receiving wave beam.In addition, of the invention another In some embodiments, one or more candidate beam angles for receiving wave beam are wide than the preferred beam angle for receiving wave beam.It needs Note that in an embodiment of the present invention, one or more candidate wave beams that receive might not be related to presently preferred reception wave beam.

According to another embodiment of the present invention, communication device further can receive network control using reception beam subset in turn The signal that device processed is sent, carrys out multiple control wave beams of monitoring network control device.The controller of communication device can be counted further Operator concentrates each combined detection index for receiving wave beam and controlling wave beam, and according to reception wave beam in subset and control wave beam Each combined detection index determine whether to change preferred control wave beam.When controller determines the preferred control wave beam of change When, controller further determines that new preferred control wave beam, and to replace preferably controlling wave beam, and wireless communication module further exists Corresponding to the uplink opportunity of old preferred control wave beam, transmission includes the instruction letter in relation to new preferred control beam information Number give network control unit.It may be noted that in an embodiment of the present invention, once it is preferred that control wave beam changes, above in different realities Applying the subsequent wave beam training discussed in example may be based on new preferred control wave beam, by communication device and network control unit into Row.

Figure 18 C is the signal of the exemplary wave beam of network control unit and communication device according to another embodiment of the present invention Figure.As shown in figure 18 c, communication device 810 can keep monitoring control wave beam, and the letter that can be disclosed based on detection index calculated Road quality determines and needs preferred control wave beam being changed to control wave beam 4 from control wave beam 2.

In terms of the 4th novelty of the invention, after preferred control wave beam is determined with preferred reception wave beam, network-control Device (such as eNB, BS) can also be by continuing to train some other wave beams, the maintenance of Lai Jinhang wave beam.Once some wave beam is tested It measures and shows and preferably detect index than preferably controlling wave beam or the preferred wave beam that sends, network control unit can determine that change is excellent Selected control wave beam preferably sends wave beam.

Figure 19 is the flow chart of the efficient wave beam training method in terms of the 4th novelty according to the present invention.Firstly, network control Device processed can be used preferred transmission wave beam and communicate (step S1902) with communication device (UE under such as its coverage area).It connects down Come, network control unit can send wave beams by using one or more and send a signal to communication device, keep training one or Multiple candidate transmissions wave beam (step S1904).Next, network control unit can receive the first indication signal, wherein first refers to Show that signal includes the information (step for the candidate one or more detection indexs for sending wave beam that related communication device calculates S1906).Finally, network control unit can be according to the one or more detection indexs obtained from the first indication signal, determination No change is preferred to send wave beam (step S1908).

An embodiment according to the present invention, one or more candidate wave beams that send can be the preferred adjacent transmission for sending wave beam Wave beam.In addition, in some embodiments of the invention, one or more candidate wave beams and the preferred wave beam that sends of sending can belong to together One wave beam rank.In addition, one or more candidate transmission wave beams send wave beam with preferred in other embodiments of the invention It can wave beam resolution having the same.In addition, in other embodiments of the invention, it is one or more it is candidate send wave beams and It can beam angle having the same it is preferred that sending wave beam.

Figure 20 A is the signal of the exemplary wave beam of network control unit and communication device according to an embodiment of the invention Figure.As shown in FIG. 20 A, network control unit 830 can be eNB or BS, and can produce with different direction and/or be directed toward not Multiple wave beams of equidirectional (angle).Network control unit 830 can keep monitoring the preferred adjacent beams for sending wave beam 830-1, Wherein the preferred wave beam 830-1 that sends is presently used for communicating with communication device 810.

Figure 21 is the exemplary flow chart of UE and BS operation according to a eighth embodiment of the present invention.Complete first stage wave beam After training, UE and BS can be used preferred wave beam and start data transmission.Next, BS can be protected in the eighth embodiment of the present invention Hold the adjacent beams of the preferred wave beam of training.After receiving the signal that BS is sent by adjacent beams, UE can will be adjacent beams meter The detection index of calculation feeds back to BS as beam selection indicator.BS can be then more preferable based on beam selection indicator selection Wave beam, and the new selection wave beam of application.Next, new selection wave beam, which can be used, in UE and BS starts data transmission.

According to another embodiment of the present invention, when network control unit detects that current beam has the channel quality of decline When, network control unit can further determine that rollback, be communicated using the wave beam with lower wave beam resolution.Figure 20 B is The schematic diagram of the exemplary wave beam of network control unit and communication device according to another embodiment of the present invention.As shown in fig. 20b, The preferred wave beam 830-1 that sends can be return back to the wave beam 830-2 compared with minor beam resolution by network control unit 830.

Therefore, according to some embodiments of the present invention, in terms of the 4th novelty of the invention, one or more candidate hairs Send wave beam and the preferred wave beam that sends that can belong to different wave beam ranks.In addition, in some embodiments of the invention, one or more A candidate wave beam resolution for sending wave beam is low than the preferred wave beam resolution for sending wave beam.In addition, of the invention another In a little embodiments, one or more candidate beam angles for sending wave beam are wide than the preferred beam angle for sending wave beam.It needs to infuse Meaning, in an embodiment of the present invention, one or more candidate wave beams that send might not be related to wave beam is presently preferably sent.

According to another embodiment of the present invention, the candidate transmission wave beam of one or more in terms of the 4th novelty of the invention It can be control wave beam.Figure 20 C is the exemplary wave beam of network control unit and communication device according to another embodiment of the present invention Schematic diagram.As shown in Figure 20 C, communication device 810 can keep monitoring control wave beam, and can be taken off based on calculated detection index Preferred control wave beam is changed to control wave beam 4 from control wave beam 2 by the channel quality shown.

More particularly, network control unit can persistently send signal by controlling wave beam.Communication device can as described above, By the signal sent in turn using beam subset reception network control unit is received, carry out the control wave of monitoring network control device Beam.When as shown in Figure 20 C, when communication device determines change preferred control wave beam, communication device can further determine that new preferred Wave beam is controlled, to replace preferably controlling wave beam, and new preferred control wave beam is fed back into network control unit.

Therefore, the wireless communication module of network control unit can receive the second indication signal from communication device, wherein second Indication signal includes the information in relation to new preferred control wave beam.The controller of network control unit can determine new preferred control Whether wave beam is identical as the previous preferred control wave beam that communication device determines in previous wave beam training process.When controller determines When new preferred control wave beam and previously preferred control wave beam difference, as discussed in difference embodiments above, controller can lead to It crosses from multiple transmission wave beams that wireless communication module is supported, selects transmission wave beam related with new preferred control wave beam Collection starts new wave beam training process to determine, and indicates that wireless communication module uses the transmission wave beam in subset in turn, to send out The number of delivering letters gives communication device, for new wave beam training process.

For example, wireless communication module can further receive third indication signal, and wherein third indication signal includes Closing communication device is the information that one or more detection indexs that wave beam calculates are sent in subset.Controller can refer to according to from third Show the one or more detection indexs obtained in signal, selects new preferred transmission wave beam from the transmission wave beam of subset.It determines After new preferred transmission wave beam, data transmission can be started.

It may be noted that wave beam maintenance is realized at the end UE and BS respectively in terms of the third and fourth novelty of the invention.So One, UE and BS can be using suitable wave beams for communicating.

The above embodiment of the present invention can be implemented in numerous modes.For example, embodiment can be using hardware, soft Part or its combine to implement.The combination for executing any component or component that function is described above generally is regarded as one or more The processor of a control function discussed above.One or more processors can be implemented in numerous modes, for example, with specialized hardware, Or and common hardware, function above-mentioned is executed using microcode (microcode) or the above-mentioned common hardware of software design.

As the sequence word of the modified elements in detail in the claims such as " first ", " second ", " third " is not meant to that itself has There is the time sequencing that the grade of any priority, priority or an element is higher than another element or method executes, and It is used to distinguish an element with definite title as just label and there is the another of same names (in addition to modifying sequence word) Element.

Though the present invention is disclosed above in the preferred embodiment, its range being not intended to limit the invention.Institute of the present invention Belong to those of ordinary skill in technical field, without departing from the spirit and scope of the present invention, when can be used for a variety of modifications and variations. Therefore, the scope of the present invention defines protection by claims and equivalency range.

Claims

1. a kind of communication device, comprising:

Wireless communication module is communicated with network control unit using the preferred reception wave beam determined in wave beam training process, and led to It crosses using one or more candidate reception wave beams and receives the signal of the network control unit, further monitor the one or more Candidate receives wave beam, and wherein the signal is sent by the network control unit using preferred control wave beam；And

Controller, calculates the preferred detection index for receiving wave beam and the preferred control wave beam and the one or more is candidate Each combined detection index of wave beam and the preferred control wave beam is received, and according to the preferred reception wave beam and the preferred control The detection index of wave beam and the candidate each combined detection for receiving wave beam and the preferred control wave beam of the one or more refer to Mark, it is determined whether the preferred reception wave beam is changed,

Wherein the wireless communication module is by receiving the network control unit using the reception wave beam received in beam subset in turn The signal of transmission further monitors multiple control wave beams of the network control unit, wherein multiple control wave beam is by the network Control device is used in turn to send signal.

2. communication device as described in claim 1, which is characterized in that the candidate wave beam that receives of the one or more is that this preferably connects Receive the adjacent reception wave beam of wave beam.

3. communication device as described in claim 1, which is characterized in that the candidate wave beam that receives of the one or more preferably connects with this Receive wave beam wave beam resolution having the same.

4. communication device as described in claim 1, which is characterized in that the candidate wave beam that receives of the one or more preferably connects with this Receiving wave beam has different wave beam resolutions.

5. communication device as described in claim 1, which is characterized in that the candidate resolution ratio for receiving wave beam of the one or more The preferred resolution for receiving wave beam is low.

6. communication device as described in claim 1, which is characterized in that the controller further calculates the received wave in the subset Each combined detection index of beam and multiple control wave beam, and according to the reception wave beam and multiple control wave in the subset Each combined detection index of beam determines whether to change the preferred control wave beam.

7. communication device as claimed in claim 6, which is characterized in that change the preferred control wave beam when the controller determines When, which further determines that new preferred control wave beam to replace the preferred control wave beam, and the wireless communication module is into one It walks on the uplink opportunity for corresponding to old preferred control wave beam, transmission includes in relation to the new preferred control beam information Indication signal gives the network control unit.

8. a kind of efficient wave beam training method, comprising:

The signal of network control unit is received, by using one or more candidate reception wave beams to monitor the one or more Candidate receives wave beam, and wherein the signal is sent by the network control unit using the preferred control wave beam that communication device determines, and The communication device is communicated using the preferred reception wave beam determined in wave beam training process with the network control unit；

Calculate the preferred detection index for receiving wave beam and the preferred control wave beam and the candidate reception wave beam of the one or more With each combined detection index of the preferred control wave beam；And

According to the preferred detection index for receiving wave beam and the preferred control wave beam and the candidate reception wave beam of the one or more With each combined detection index of the preferred control wave beam, it is determined whether the preferred reception wave beam is changed,

Wherein by receiving the signal of network control unit transmission using the reception wave beam received in beam subset in turn, to supervise Multiple control wave beams of the network control unit are surveyed, multiple control wave beam is used in turn by the network control unit to send letter Number.

9. efficiently wave beam training method as claimed in claim 8, which is characterized in that one or more candidate receives wave beam and is The preferred adjacent reception wave beam for receiving wave beam.

10. efficiently wave beam training method as claimed in claim 8, which is characterized in that the one or more is candidate to receive wave beam With the preferred reception wave beam wave beam resolution having the same.

11. efficiently wave beam training method as claimed in claim 8, which is characterized in that the one or more is candidate to receive wave beam There is different wave beam resolutions from the preferred reception wave beam.

12. efficiently wave beam training method as claimed in claim 8, which is characterized in that the one or more is candidate to receive wave beam Resolution than this it is preferred receive wave beam resolution it is low.

13. efficiently wave beam training method as claimed in claim 8, which is characterized in that further comprise:

Calculate each combined detection index for receiving wave beam and multiple control wave beam in the subset；And

According to each combined detection index for receiving wave beam and multiple control wave beam in the subset, to determine whether to change The preferred control wave beam of the communication device.

14. efficiently wave beam training method as claimed in claim 13, which is characterized in that when determine the preferred control wave beam need by When change, this method further comprises:

New preferred control wave beam is determined to replace the preferred control wave beam；And

On the uplink opportunity for corresponding to old preferred control wave beam, transmission includes in relation to the new preferred control beam information Indication signal give the network control unit.

15. a kind of network control unit, comprising:

Wireless communication module sends wave beam and communication using preferred, and sends wave beam by using one or more The communication device is sent a signal to, to train one or more candidate transmission wave beams, and the first indication signal is received, wherein should First indication signal includes the information of the one or more detection indexs for the candidate transmission wave beam that the related communication device calculates； And

Controller detects index according to the one or more obtained from first indication signal, it is determined whether it is excellent to change this It publishes and send wave beam,

Wherein the wireless communication module further receives the second indication signal from the communication device, which includes The information of the preferred control wave beam of Guan Xin, and the controller further determines that whether the new preferred control wave beam fills with the communication It is identical to set the previous preferred control wave beam determined in previous wave beam training process.

16. network control unit as claimed in claim 15, which is characterized in that the candidate wave beam that sends of the one or more is to be somebody's turn to do It is preferred that sending the adjacent transmission wave beam of wave beam.

17. network control unit as claimed in claim 15, which is characterized in that the one or more is candidate to be sent wave beam and be somebody's turn to do It is preferred that sending wave beam wave beam resolution having the same.

18. network control unit as claimed in claim 15, which is characterized in that the one or more is candidate to be sent wave beam and be somebody's turn to do It is preferred that sending wave beam has different wave beam resolutions.

19. network control unit as claimed in claim 15, which is characterized in that the candidate wave for sending wave beam of the one or more Beam resolution is lower than the preferred wave beam resolution for sending wave beam.

20. network control unit as claimed in claim 15, which is characterized in that the candidate wave beam that sends of the one or more is control Wave beam processed.

21. network control unit as claimed in claim 15, which is characterized in that when the controller determines the new preferred control Wave beam and this previously preferred control wave beam difference when, which passes through multiple transmission wave beams for supporting from the wireless communication module Middle selection transmission beam subset related with the new preferred control wave beam, to start new wave beam training process, and indicating should Wireless communication module uses the transmission wave beam in the subset to send a signal to the communication device in turn, for new wave beam training into Journey.

22. network control unit as claimed in claim 15, which is characterized in that the wireless communication module further receives third Indication signal, wherein the third indication signal include in relation to the communication device be the subset in send wave beam calculate one or The information of multiple detection indexs, the controller is further according to the one or more detection obtained from the third indication signal Index selects new preferred transmission wave beam from the transmission wave beam of the subset.

23. network control unit as claimed in claim 15, which is characterized in that hair related with the new preferred control wave beam The main beam pattern of preferred control wave beam for sending the main beam pattern of wave beam new with this is Chong Die, and the main beam figure of the transmission wave beam The main beam pattern of the sample preferred control wave beam newer than this is narrow.

24. a kind of efficient wave beam training method, comprising:

Wave beam and communication are sent using preferred；

Wave beam is sent by using one or more and sends a signal to the communication device, to train one or more candidate send waves Beam；

The first indication signal is received, wherein first indication signal includes the candidate transmission wave beam that the related communication device calculates One or more detection indexs information；

Index is detected according to the one or more obtained from first indication signal, it is determined whether changes the preferred send wave Beam；

The second indication signal is received, wherein second indication signal includes the information in relation to new preferred control wave beam；

It is previous preferred to determine whether the new preferred control wave beam determines in previous wave beam training process with the communication device It is identical to control wave beam；And

When determining the new preferred control wave beam and the previously preferred control wave beam difference, by from the network control unit branch Transmission beam subset related with the new preferred control wave beam is selected in the multiple transmission wave beams held, to start new wave beam instruction Practice process, and the communication device is sent a signal to using the transmission wave beam in the subset in turn, for new wave beam training process.

25. efficiently wave beam training method as claimed in claim 24, which is characterized in that the one or more is candidate to send wave beam For the preferred adjacent transmission wave beam for sending wave beam.

26. efficiently wave beam training method as claimed in claim 24, which is characterized in that the one or more is candidate to send wave beam With the preferred transmission wave beam wave beam resolution having the same.

27. efficiently wave beam training method as claimed in claim 24, which is characterized in that the one or more is candidate to send wave beam There is different wave beam resolutions from the preferred transmission wave beam.

28. efficiently wave beam training method as claimed in claim 24, which is characterized in that the one or more is candidate to send wave beam Wave beam resolution than this it is preferred send wave beam wave beam resolution it is low.

29. efficiently wave beam training method as claimed in claim 24, which is characterized in that the one or more is candidate to send wave beam To control wave beam.

30. efficiently wave beam training method as claimed in claim 24, which is characterized in that further comprise:

Third indication signal is received, it is the transmission wave beam in the subset that wherein the third indication signal, which includes in relation to the communication device, The information of one or more detection indexs of calculating；And

Index is detected according to the one or more obtained from the third indication signal, is selected from the transmission wave beam of the subset New preferred transmission wave beam.

31. efficiently wave beam training method as claimed in claim 24, which is characterized in that related with the new preferred control wave beam Transmission wave beam main beam pattern it is Chong Die with the new main beam pattern of preferred control wave beam, and the main wave of the transmission wave beam The main beam pattern of the beam pattern preferred control wave beam newer than this is narrow.

32. a kind of communication device, comprising:

Processor, in executing memory when stored program, perform claim requires efficient wave described in any one of 9-14 The step of beam training method.